Siphon leg and water closet combination



March 3, 1959' A. A. BAKER ETAL 2,375,453 I v SIPHON LEG AND WATER CLOSET, COMBINATION Filed March 18, 1955 mvmroks G2 2525mm:

ATTORNEY I water closet.

LEG AND WATER CLOSET COMBINATION Albert A. Baker, Erie, Pa., and John H. Schmid, Westfield, N. 1., ssignors to J. A. Zurn Mfg. 'Co., Erie, Pa.,

. Q SIPHON a corporation of Pennsylvania I 3 6 .Application March 18,1955, Serial No. 495,207

4 Claims. (11. 4-252 This invention relates to water closets and more particularly to wall type water closets or the type of water 1 closets which is supported against walls as distinguished -fromthe water closets which are supported on floors.

, Water closets. in; common use in factory and industrial. buildings are frequently of a wall supported type. These water closets require the use of a flush valve and require for their operation the main line water pressure utilizing large volumes of water delivered to the closet .in.a;relatively short time to blow or wash the contents fromthe water closet when the closet is flushed. In

order to utilize this principle of flush, it is necessary for a large diameter pipe to supply water at high supply pressures to the water closet and it is important that the supply pipe maintains its size the full distance from the water supply main to the closet in order to maintain the requisite pressure and flow. The use of a pipe of sufiicient size to operate the flush valve type of water closets is impractical and the expense prohibitive in domestic linstallations, especially in localities where the water is metered. The cost of water meters increases more than in proportion to the increase in capacity and the cost of meters becomes prohibitive for domestic installations when the size of thepipe and meter is increased to a ;size suitable to operate a flush valve type closet. For

example, the cost of acne and one-quarter inch pipe is prohibitive for domestic installations and one and onequarter inch is the usual size and also about the minimum -size pipe on which a normal blowout or siphon jet flush valve operated water closet will operate. This size is adequate only in areas where suflicient supply pressure is available. .vantages over floor supported closets in convenience of .cleaning the floor of the room housing the closet. Floor mounted water closets are usually used in home installations because they usually utilize a tank to accumulate a large amount of water for flushing. In this type of .water closet, however, it is necessary for a siphon leg Wall type closets have a number of adto be built into the water closet in order for the water to siphon the contents from the closet; that is, in order that the path the water takes from the water closet basin be of such contour and of adequate or proper length to reduce velocity of the water and fill the passageway of' the pipe. when the closet is flushed in order wall hung tanktype closet, it is impossible to find suflicient room in the closet itself to build into the closet .a siphon leg of suflicient length to be of practical operability without utilizing additional pressure from the supply line or other source. This makes the use of present 2,875,453 P tente Ma f- .3 5?

, 2 wall hung water closets impractical in home installations and discourages the use thereof. An advantage of the siphon leg disclosed herein is that all siphon functions are performed inside the wall of the room. Therefore, the siphon leg can be made as long as desirable in order to provide maximum siphoning eliiciency. Further, the opening through the siphon leg can be made any practical size desired in order to meet all plumbing codes. Also, considerable space is. saved inside the room of a house since the bowl can be made smaller when the siphon leg is disposed in the wall of the room. t

It is, accordingly, an object of this invention to overcome the deficiencies in open tank type wall hung water closets in prior designs and, more particularly, it is an object to provide a wall type water closet with a separable siphon leg connected thereto which is simple in, construction, economical to manufacture, and simple and efiicient to use.

Another object of the invention is to provide a siphon leg for a wall hung water closet which is separate and ice not built into the water closet itself and, therefore, does not limit the design of the closet but simplifies it. An additional object of the invention is to provide a siphon leg for a flush tank water closet wherein the siphon leg is housed in the wall behind the closet.

A further object of the invention is to provide a wall mounted water closet in combination with a flush tank. A still further object of this invention is to provide a wall type water closet in combination with a siphon leg therefor.

, invention consists of the combination and arrangement of parts hereinafter more fully described, illustrated in the accompanying drawings and more particularly pointed out in the appended claims, it being understood that changes may be made in the form, size, proportions, and minor details of construction without departing from the spirit or sacrificing any of the advantages of the invention.

In the drawing:

Fig. 1 is a side view of a water closet siphon leg support and wall mounting therefor according to the invention;

Fig. 2 is a front view of the siphon leg closet support or special system and vent pipe shown in Fig. l; and

Fig. 3 is an enlarged cross sectional view of an installation according to the invention.

Now with more specific reference to the drawings, Fig 1 shows a floor 1 supported by joists 2 and having a wall made of spaced wall members 3 of a building extending upwardly from the floor 1. An opening is formed at 4 for the drainage pipe 5 which extends upwardly therethrough and to accommodate the elbow 6 which is connected to a siphon leg 7. The siphon leg 7 is operatively connected to the wall hung water closet 8 which has a flush tank 9 supported thereon as will be later explained.

The water closet 8 embodies a conventional bowl design having a water channel 10 extending around the upper periphery thereof and jet holes 11 communicating with the channel 10. Water is supplied to the channel 10 from the tank 9 through a shutoff valve mechanism of the type usually found in flush tanks. The tank 9 may be supported on top of the water closet 8 at 12 and a handle 13 will be operatively connected to a valve system for flushing the flush tank 9 to drive water down through the channel 10 and through the jet holes 11, washing down the inside of the bowl and flowing into the water closet 8 to raise the level 14 of water therein until the water spills over the edge 15 and runs down into the siphon leg-7. The water from the supply could be connected to the jet holes 11 to aid the water from the flush tank vertical position.

9 in washing down the closet 8. Also, a passage can be drainage pipe '5 terminates at the upper portionthereof in 'axfiang ed portion23 which is adapted to receive a vent pipe.24 in a sealed joint 25. Vent pipe 24 is adapted to 'extend upwardly through the roof of a house to carry away sewer gases. The lower end of pipe is adapted to be connected to a sewer or other means. A laterally extendingbranch 26'is integrally attached to drainage pipe :5 at 27 and has'a'flanged portion 28 which receives the end 29 of the elbow 6 sealingly connected thereto at 30.

Elbow 6 turns upwardly and terminates in a flanged portion 31. Theflanged portion 31 is adapted to receive the lower end 32 of the siphon leg 7 and the lower end 32 "has a plate'30a supportedthereon which has holes adapted "to receive bolts 34 for holding the plate 30a to the floor 1.

The siphon .leg 7 has a curved intermediate portion which bends in and out in a serpentine fashion and terminates at the upper end thereof in a forwardly extending portion 35 having a flange. 36 in the front end thereof. Laterally extending cars 37 are attached to the rear por- 'tion at 38 and have holes for lag screws 39 for attaching the siphon leg 7 to a structural member in a building,

such as member 40, whereby it will be maintained in a The cars 19 are adapted to receive the bolts 18 having heads 20.overlying washers 42 for further securing the water closet 8 thereto as mentioned supra. As shown. in Fig. 3, the upper end 35 of the siphon leg 7 has the flange 36 thereon which is longer than usual and which extends into a groove 47 extending 'around'the opening 48 in the rear portion of the water 'closet 8 and engages packing material 49. The groove 47 is deeper than would ordinarily be the case and has a plurality of ring gaskets therein, some rigid and some resilient. A suitaible number of the gaskets may be removed to'adjust'the length of pipe end extending into the groove 47 to adjust the water closet 8 nearer to or further away from the supporting fitting to accommodate various thicknesses of wall. Therefore, when the installation plumber mounts the water closet 8 as shown in Fig. 1 and tightens thebolts 42 in the cars 19, the flange 36 will be drawn into sealing'engagement with the packing 49, therefore preventing any leakage.

It will be noted that as the siphon leg '7 extends rearward from the portion 35, the water flowing from the bowl must flow around the sharp corner 149 as it flows downward, thus sharply changing the direction of flow.

As it continues to flow, the water encounters further curves 45 "and 4.6 as it flows through thersiphon leg 7. These curves and sharp corners reduce the velocity of the water andlbuild up the back pressure to a considerable amount, causing the siphon leg 7 to completely fill with water. As' it fills up, the column of water will extend down into the leg '7 and sufficient suction will be built up so that the entire contents of the bowl will be drawn therefrom siphon leg 7 and through elbow pipe 29 to flattened to change the shape of the stream, change the direction of flowand, in other ways, restrict the flow .of

. 4 water through the siphon leg. As a result, the water will have its velocity reduced at each of these changes in direction as it flows through the siphon leg so that the leg fills completely with water and, therefore, an eflicient siphon will result.

The siphon leg contemplated herein is not limited to the specific shape, relative size, and disposition of contours disclosed herein but the specific design usedin any given application would be affected by the design of the bowl and the waterways thereof, the size and layout of the drain lines of the particular installation, the thickness of the wall in which the leg is to be housed, ,and other ambient factors.

As a result of the design of siphon leg disclosed herein, an optimum shape and length of leg .can be utilized without regard to space since the leg will be enclosed in the wall. Further, the cost of bowls can be reduced since the conventional siphon built into a bowl presents ,an expensive pottery job to manufacture.

The foregoing specification sets forth the invention in its preferred practical forms but'the structure shown'is capable of modification within a range of equivalents withoutdeparting from the invention which-is to be understood is broadly novel as is commensurate with the appended claims.

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:

1. A siphon leg for a water closetfor installation in a hollow wall of a building between two Opposite sides thereof comprising a serpentine curved hollow intermediate portion for causing siphonic action terminating at the upper end thereof in aforwardly extending portion, said forwardly extending portion being adapted to be connected to a water closet to receive the discharge therefrom, the lower end of said siphon leg being supported on a drainage pipe, laterally extending first ears attached to the rear upper portion of said intermediate portion, said laterally extending ears having means thereon adapted to be attached to a structural member of said wall of said building on the side of said member opposite the side thereof adjacent said water closet, laterally extending second ears attached to said forwardly extending portion adjacent the front edge thereof, and means on said second ears to attach a water closet thereto.

2. In combination, a water closet and a siphon leg connected thereto comprising a water closet, a siphonlegfor said water closet for installation in a hollow wall of a building between two opposite sidesthereof comprising a serpentine curved hollow intermediateportion for causing siphonic actionterminating at the upper end thereof in a forwardly extending portion, said forwardly extending portion being connected to said water closet to receive the discharge therefrom, the lower end of said siphon leg being supported on a drainage pipe, laterally extending first ears attached to the'rear upper portion of said intermediate portion, said laterally extending ears having means thereon adapted to be attached to a structural member of said wall of said building-on the side o'f'said member opposite to the side thereof adjacent said water closet, laterallyextending second ears attached to said forwardly extending portion adjacent the front edge'thereof, and means on said second ears attaching said second ears to said Water closet.

3. The combination recited in -claim Z'Wherein said forwardly extending portion of said siphon leg is connected to said water closet by means of'a flange on said forwardly extending portion, a groove in said Watercloset concentric with the discharge therefrom, and packing means in said groove, said flange being forced into sealing engagement with said packing means by said means attaching said water closet to said ears. I

' 4. The combination recited in claim 3 wherein said packing means in said groove comprises alternate vlayers ofu'igi'd and resilient washer material.

{References on following page) References Cited in the file of this patent UNITED STATES PATENTS Hindsdale June 5, 1900 Stewart Oct. 14, 1902 Hardin Nov. 3, 1903 Barrow Apr. 4, 1916 Ebinger et a1. Jan. 23, 1917 Watrous Oct. 31, 1922 

